STOCKTON -- The onramp from Pershing Avenue to northbound Interstate 5 opened this morning, five days ahead of schedule, according to the California Department of Transportation.

Caltrans is working to rebuild the eight lanes of I-5 from Dr. Martin Luther King Jr. Boulevard/Charter Way to Country Club Boulevard in Stockton, a $54 million project, and several on and off ramps have been closed during the process.

Still closed as of Friday morning are:

* The offramp from southbound I-5 to Monte Diablo Avenue, which is scheduled to reopen on July 2;

* The onramp from Monte Diablo Avenue to southbound I-5, which is scheduled to reopen on July 2.

Additionally, the on ramp from Monte Diablo Avenue to northbound I-5 is scheduled to close from June 30 to Aug. 8.

This project will also widen the inside shoulders from five feet to 10 feet, rebuild the outside shoulders and auxiliary lanes, and replace existing guard rail with a concrete median barrier.